Overall I like this tumbler, which I got to keep rodents out of my compost. 
It was a little tricky to put together, but was able to do it alone in under 30 minutes. 
The downsides to it are: Once it's half full, it's harder to rotate. You have to wedge your fingers in the crevices and pull down. Just brace yourself so you don't throw your back. Also, be careful because the latch can fly open with the weight of the compost. It happened once and since then I've been careful to use one hand to hold the latch secure as I rotate it. Another downside is that liquid seeps from the unit and the underside gets ugly and gunky. You can hose it off, but that makes the compost wetter. 
I do think you need a second tumbler for this to work so that you stop adding at some point and let it cook to finish. I am going to try the hotfrog composter next, which is the same capacity, but lower to the ground and you can roll it to the location where you plan to empty it.